Keel Plating

800×600

Normal
0

false
false
false

EN-US
X-NONE
X-NONE

MicrosoftInternetExplorer4

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:”Table Normal”;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:””;
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:”Times New Roman”,”serif”;}

800×600

Normal
0

false
false
false

EN-US
X-NONE
X-NONE

MicrosoftInternetExplorer4

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:”Table Normal”;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:””;
mso-padding-alt:0in 5.4pt 0in 5.4pt;
mso-para-margin:0in;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:”Times New Roman”,”serif”;}

At the centre line of the bottom structure is
located the keel, which is often said to form 
the backbone of the ship. This contributes substantially to the longitudinal
strength and effectively distributes local loading caused when docking the
ship. The commonest form of keel is that known as the ‘flat plate’ keel, and
this is fitted in the majority of ocean-going and other vessels (see Figure 8
above ). A form of keel found on smaller vessels is the bar keel . The bar keel
may be fitted in trawlers, tugs etc., and is also found in smaller ferries.


Where grounding is possible this type of keel is suitable with its massive
scantlings, but there is always a problem of the increased draft with no
additional cargo capacity. If a double bottom is fitted the keel is almost
inevitably of the flat plate type, bar keels often being associated with open
floors, where the plate keel may also be fitted.

Duct keels are provided in the double bottoms of some vessels. These run
from the forward engine room bulkhead to the collision bulkhead and are
utilised to carry the double bottom piping. The piping is then accessible when
cargo is loaded, an entrance to the duct being provided at the forward end of
the engine room. No duct is required aft of the engine room as the piping may
be carried in the shaft tunnel.

via Blogger http://ift.tt/2mOiuXC

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s